I'm not seeing it either. I have 4 CZs - 97BD, 85 Combat, pre-B 75, and 2075 RAMI D. The RAMI is close in size to your Compact 75. Guess I'm not familiar enough with the Compact to notice what's special about it.

This is an unusual one. Most compact 75s with a safety have steel frames. CZ makes alloy compact frames for the P-01 and PCR but those are both decocker guns. There are 3 variants that have a safety and an alloy frame, all fairly hard to find. The factory sold some P-02s and Compact Ls built that way to the US, and built some compacts like this one for a contract with Israel. Some of the Izzy guns got surplused out and sold to the US, including this one. It’s a PCR alloy frame, with a safety and a standard short rail 75 compact upper instead of a decocker and full rail slide the PCRs usually have. You don’t often see alloy framed safety equipped CZs (except the omegas now) so I was excited about it.

I do like the DW. It’s a 9mm which makes purists wince but it is an outstanding shooter.

Anyone who says that isn't a "purist", they're a wannabe. The original caliber for the Commander was 9mm. Also, it was originally an aluminum frame, just like your Guardian. Later, when Colt came out with a steel framed version (still 9mm) the original aluminum framed pistol was renamed "Lightweight Commander".

My Guardian is .45, as is my V-Bob.

Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence. - John Adams